ARM: imx: use PTR_ERR_OR_ZERO

replace IS_ERR/PTR_ERR

Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

arch/arm/mach-imx/devices/platform-mxc_rnga.c

@@ -48,9 +48,6 @@ static int __init imxXX_add_mxc_rnga(void)
 #endif /* if defined(CONFIG_SOC_IMX31) */
 		ret = ERR_PTR(-ENODEV);
 
-	if (IS_ERR(ret))
-		return PTR_ERR(ret);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(ret);
 }
 arch_initcall(imxXX_add_mxc_rnga);

arch/arm/mach-imx/mach-mx31moboard.c

@@ -435,10 +435,8 @@ static int __init moboard_usbh2_init(void)
 		return -ENODEV;
 
 	pdev = imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(pdev);
 }
 
 static const struct gpio_led mx31moboard_leds[] __initconst = {

arch/arm/mach-imx/mx31moboard-devboard.c

@@ -214,10 +214,8 @@ static int __init devboard_usbh1_init(void)
 	usbh1_pdata.otg = phy;
 
 	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(pdev);
 }
 
 

arch/arm/mach-imx/mx31moboard-marxbot.c

@@ -328,10 +328,8 @@ static int __init marxbot_usbh1_init(void)
 	usbh1_pdata.otg = phy;
 
 	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(pdev);
 }
 
 static const struct fsl_usb2_platform_data usb_pdata __initconst = {

arch/arm/mach-imx/mx31moboard-smartbot.c

@@ -142,10 +142,8 @@ static int __init smartbot_otg_host_init(void)
 		return -ENODEV;
 
 	pdev = imx31_add_mxc_ehci_otg(&otg_host_pdata);
-	if (IS_ERR(pdev))
-		return PTR_ERR(pdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(pdev);
 }
 #else
 static inline int smartbot_otg_host_init(void) { return 0; }